<!DOCTYPE html>
<html>
<head>
<script type="text/javascript">

function boom()
{
  var table = document.createElement('table');
  document.body.appendChild(table);
  var colgroup = document.createElement('colgroup');
  table.appendChild(colgroup);
  var col = document.createElement('col');
  colgroup.appendChild(col);
}


</script>
</head>

<body onload="boom();"></body>
</html>
